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NAME
tanh, tanhf, tanhl - hyperbolic tangent functionSYNOPSIS
#include <math.h> double tanh(double x); float tanhf(float x); long double tanhl(long double x);
DESCRIPTION
The tanh() function returns the hyperbolic tangent of x, which is defined mathematically as sinh(x) / cosh(x).CONFORMING TO
SVID 3, POSIX, BSD 4.3, ISO 9899 (C99). The float and the long double variants are C99 requirements.SEE ALSO
acosh(3), asinh(3), atanh(3), cosh(3), sinh(3)-
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